.spin, .spin>div{
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
}

.mask{
  opacity: .3;
  background: #333;
}

.fixed {
  position: fixed;
}


.spin{
  &.hide{
    display: none;
  }
  img{
    position: absolute;
    top: 50%;
    left: 50%;
    width: 50px;
    height: 50px;
    margin: -25px 0 0 -25px;
  }
}
